void inter_tx_task () {
uint8_t i;
nrk_sig_t tx_done_signal;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
bmac_addr_decode_enable();
bmac_addr_decode_set_my_mac(MyOwnAddress);
while (1) {
if(ipQue>0) {
if(itxPtr>queMax-1) {
itxPtr=0;
}
bmac_addr_decode_enable();
bmac_addr_decode_set_my_mac(MyOwnAddress);
nrk_led_set(BLUE_LED);
bmac_auto_ack_disable();
for(i=0; i<ipLen[itxPtr]; i++) {
itx_buf[i]=ipDat[itxPtr][i];
}
if(ipDes[itxPtr]==0xFF) {
bmac_addr_decode_dest_mac(0xFFFF);
}
else {
bmac_addr_decode_dest_mac(ipDes[itxPtr]);
}
bmac_tx_pkt((char*)itx_buf,ipLen[itxPtr]);
ipQue--;
itxPtr++;
nrk_led_clr(BLUE_LED);
}
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
int r;
uint8_t length, val;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
while(1) {
nrk_wait_until_next_period();
if(functionRecieved) {
tx_buf[0] = MY_ID;
tx_buf[1] = 100;
length = 2;
val=bmac_tx_pkt(tx_buf, length);
r = copied_function();
printf("Value returned from copied function is %d\n",r);
}
}
}
void tx_task ()
{
uint8_t j, i, val, len, cnt;
volatile uint8_t start;
uint16_t ticks,ticks_min,ticks_max;
uint16_t iterations;
uint16_t nrk_max_sleep_wakeup_time;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
iterations=0;
ticks_min=-1;
ticks_max=0;
tx_data_ok=0;
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
while (!bmac_started ())
nrk_wait_until_next_period ();
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
cnt = 0;
while (1) {
// Build a TX packet
sprintf (tx_buf, "This is a test %d", cnt);
cnt++;
// For blocking transmits, use the following function call.
// For this there is no need to register
// val=bmac_tx_packet(tx_buf, strlen(tx_buf));
// This function shows how to transmit packets in a
// non-blocking manner
val = bmac_tx_pkt_nonblocking(tx_buf, strlen (tx_buf));
// This functions waits on the tx_done_signal
ret = nrk_event_wait (SIG(tx_done_signal));
// Just check to be sure signal is okay
if(ret & SIG(tx_done_signal) == 0 )
nrk_kprintf (PSTR ("TX done signal error\r\n"));
else tx_data_ok=1;
// Task gets control again after TX complete
//nrk_kprintf (PSTR ("Tx task sent data!\r\n"));
nrk_wait_until_next_period ();
}
}
/***************************************************************************
*
*
*
*Retransmission Task
*
*
*
****************************************************************************/
void re_tx_task()
{
int i=0;
uint8_t val;
nrk_sig_t tx_done_signal;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
//Retransmission
while(1)
{
for(i=1;i<=MAX_MOLES;i++)
{
if(i==MY_ID)
{
continue;
}
switch(sendNextPacket[i])
{
case LAST_PACKET_ACK:
case WAIT_ACK:
val=bmac_tx_pkt(&tx_buf[TX_LOCATION(i)], transmittedPacketLength[i]);
printf("Retransmitted\r\n");
break;
default:
break;
}
}
nrk_wait_until_next_period();
}
}
void tx_task ()
{
uint8_t j, i, val, len;
int8_t v;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
ctr_cnt[0]=0; ctr_cnt[1]=0; ctr_cnt[2]=0; ctr_cnt[3]=0;
tx_count = 0;
while (1) {
if (tx_count >= 300) {
printf("Total packets sent : %d \r\n", tx_count);
}
// Build a TX packet
if (tx_count < 300) {
sprintf(tx_buf, "Hello World");
nrk_led_set (BLUE_LED);
bmac_auto_ack_disable();
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
if(val==NRK_OK) tx_count++;
else printf("NO ack or Reserve Violated! \r\n");
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
}
nrk_wait_until_next_period ();
}
}
void slaveDiscovery_task(){
uint8_t val;
nrk_sig_t sd_done_signal; // Signal registering to get transmission done
//Wait till BMAC is ready
while (!bmac_started ())
nrk_wait_until_next_period ();
//Set the tx signal
sd_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (sd_done_signal);
while(1){
tx_buf[0] = MY_ID; // indicates packet from master
tx_buf[1] = SLAVE_DISCOVERY; // slave discovery message
tx_buf[2] = sequenceNumber; // sequenceNumber of the packet
sequenceNumber++; // incrementing the sequence Number
val=bmac_tx_pkt(tx_buf,3); // transmitting the packet
checkIfReceivedResponse();
nrk_wait_until_next_period ();
}
}
void tx_task () {
uint8_t i;
nrk_sig_t tx_done_signal;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
bmac_addr_decode_enable();
bmac_addr_decode_set_my_mac(MyOwnAddress);
while (1) {
if(updateCnt==0) {
updateCnt = updateCntMax;
for(i=0; i<MaxuIDTrack; i++) {
uniqueIDsRREQ[i]=0;
}
for(i=0; i<MaxuIDTrack; i++) {
uniqueIDsRSAL[i]=0;
}
for(i=0; i<MaxuIDTrack; i++) {
if(ackTrackR[i]==ackTrackS[i]) {
ackTrackR[i]=0;
ackTrackS[i]=0;
ackTrack[i]=0;
}
}
for(i=0; i<MaxuIDTrack; i++) {
if(ackTrack[i]!=0) {
if(cache[1]==ackTrack[i]) {
cache[0]=0;
}
ackTrackS[i]=0;
ackTrackR[i]=0;
RsalInitiate(ackTrack[i]);
ackTrack[i]=0;
}
}
for(i=0; i<MaxuIDTrack; i++) {
ackTrack[i]=ackTrackS[i];
}
}
else {
updateCnt--;
}
if(cache[0]==0) {
if(rDiscCnt==0) {
RouteDiscovery();
rDiscCnt=rDiscCntMax;
}
else {
rDiscCnt--;
}
}
else {
DataInitiate();
rDiscCnt=0;
}
if(pQue>0) {
if(txPtr>queMax-1) {
txPtr=0;
}
bmac_addr_decode_enable();
bmac_addr_decode_set_my_mac(MyOwnAddress);
nrk_led_set(GREEN_LED);
bmac_auto_ack_disable();
for(i=0; i<pLen[txPtr]; i++) {
tx_buf[i]=pDat[txPtr][i];
}
if(pDes[txPtr]==0xFF) {
bmac_addr_decode_dest_mac(0xFFFF);
}
else {
bmac_addr_decode_dest_mac(pDes[txPtr]);
}
bmac_tx_pkt((char*)tx_buf,pLen[txPtr]);
for(i=0; i<pLen[txPtr]; i++) {
putchar(tx_buf[i]);
}
putchar(pDes[txPtr]);
pQue--;
txPtr++;
nrk_led_clr(GREEN_LED);
}
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
int r;
int i=0,j=0;
uint8_t val;
nrk_sig_t tx_done_signal;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
for(i=1;i<=MAX_MOLES;i++)
{
tx_buf[SOURCE_ADDRESS_LOCATION + TX_LOCATION(i)] = MY_ID;
}
printf("Transmit Task\r\n");
while(1){
for(i=1;i<=MAX_MOLES;i++)
{
if(i==MY_ID)
{
continue;
}
//Check the state of the state machine
switch(sendNextPacket[i])
{
//Start the transmission
case START:
tx_buf[SEQUENCE_NUM_LOCATION+TX_LOCATION(i)] = ++sequenceNumber;
lastSentSequenceNo[i]= sequenceNumber;
//Create a new packet
r=createNextTaskPacket(&tx_buf[TX_LOCATION(i)],&data[DATA_LOCATION(i)],packetSize[i],i);
//Decide the packet length
transmittedPacketLength[i] = r+HEADER_SIZE;
for(j=0;j<transmittedPacketLength[i];j++)
printf("%d \t",tx_buf[TX_LOCATION(i)+j]);
if(r == 100)
{
sendNextPacket[i] = WAIT_ACK;
}
else
{
sendNextPacket[i] = LAST_PACKET_ACK;
}
val=bmac_tx_pkt(&tx_buf[TX_LOCATION(i)], transmittedPacketLength[i]);
break;
case IN_PROGRESS:
tx_buf[SEQUENCE_NUM_LOCATION+TX_LOCATION(i)] = ++sequenceNumber;
lastSentSequenceNo[i]= sequenceNumber;
//Create a new packet
r=createNextTaskPacket(&tx_buf[TX_LOCATION(i)],&data[DATA_LOCATION(i)],packetSize[i],i);
//Decide the packet length
transmittedPacketLength[i] = r+HEADER_SIZE;
if(r == 100)
{
sendNextPacket[i] = WAIT_ACK;
}
else
{
printf("last packet\n");
sendNextPacket[i] = LAST_PACKET_ACK;
}
val=bmac_tx_pkt(&tx_buf[TX_LOCATION(i)], transmittedPacketLength[i]);
break;
case WAIT_ACK:
case END:
default:
break;
}
}
nrk_wait_until_next_period();
}
}
void tx_task ()
{
uint8_t j, i, val, len, byte_cnt, got_start;
int8_t v;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
nrk_sig_t uart_rx_signal;
nrk_sig_mask_t sm;
// Get the signal for UART RX
uart_rx_signal=nrk_uart_rx_signal_get();
// Register your task to wakeup on RX Data
if(uart_rx_signal==NRK_ERROR) nrk_kprintf( PSTR("Get Signal ERROR!\r\n") );
nrk_signal_register(uart_rx_signal);
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
while (!bmac_started ())
nrk_wait_until_next_period ();
nrk_led_set(RED_LED);
// Sample of using Reservations on TX packets
// This example allows 2 packets to be sent every 5 seconds
// r_period.secs=5;
// r_period.nano_secs=0;
// v=bmac_tx_reserve_set( &r_period, 2 );
// if(v==NRK_ERROR) nrk_kprintf( PSTR("Error setting b-mac tx reservation (is NRK_MAX_RESERVES defined?)\r\n" ));
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
bmac_set_cca_active(0);
ctr_cnt[0]=0; ctr_cnt[1]=0; ctr_cnt[2]=0; ctr_cnt[3]=0;
while (1) {
// Wait for UART signal
got_start=0;
byte_cnt=0;
do {
sm=nrk_event_wait(SIG(uart_rx_signal));
while(nrk_uart_data_ready(NRK_DEFAULT_UART)!=0)
{
// Read Character
val=getchar();
tx_buf[byte_cnt]=val;
if(got_start && val==0xff )
{
nrk_led_toggle(ORANGE_LED);
printf( "0xff byte: %d\n", byte_cnt );
byte_cnt=0;
got_start=0;
val=1; // Something other than 0xff so that the
// got_start isn't set
}
if(val==0xff)
{
nrk_led_toggle(GREEN_LED);
got_start=1;
}
if(got_start) byte_cnt++;
if(byte_cnt>3) break;
}
} while(byte_cnt<4);
// Build a TX packet
nrk_led_set (BLUE_LED);
// Auto ACK is an energy efficient link layer ACK on packets
// If Auto ACK is enabled, then bmac_tx_pkt() will return failure
// if no ACK was received. In a broadcast domain, the ACK's will
// typically collide. To avoid this, one can use address decoding.
// The functions are as follows:
// bmac_auto_ack_enable();
// bmac_auto_ack_disable();
// Address decoding is a way of preventing the radio from receiving
// packets that are not address to a particular node. This will
// supress ACK packets from nodes that should not automatically ACK.
// The functions are as follows:
// bmac_addr_decode_set_my_mac(uint16_t MAC_ADDR);
// bmac_addr_decode_dest_mac(uint16_t DST_ADDR); // 0xFFFF is broadcast
// bmac_addr_decode_enable();
// bmac_addr_decode_disable();
ctr_cnt[0]++;
if(ctr_cnt[0]==255) ctr_cnt[1]++;
if(ctr_cnt[1]==255) ctr_cnt[2]++;
if(ctr_cnt[2]==255) ctr_cnt[3]++;
// You need to increase the ctr on each packet to make the
// stream cipher not repeat.
bmac_encryption_set_ctr_counter(&ctr_cnt,4);
// For blocking transmits, use the following function call.
// For this there is no need to register
/* nrk_kprintf( PSTR("Sending: ") );
for(i=0; i<byte_cnt; i++ )
printf( "%d ",tx_buf[i] );
nrk_kprintf( PSTR("\r\n") );
*/
val=bmac_tx_pkt(tx_buf, byte_cnt);
// This function shows how to transmit packets in a
// non-blocking manner
// val = bmac_tx_pkt_nonblocking(tx_buf, strlen (tx_buf));
// nrk_kprintf (PSTR ("Tx packet enqueued\r\n"));
// This functions waits on the tx_done_signal
// ret = nrk_event_wait (SIG(tx_done_signal));
// Just check to be sure signal is okay
// if(ret & SIG(tx_done_signal) == 0 )
// nrk_kprintf (PSTR ("TX done signal error\r\n"));
// If you want to see your remaining reservation
// printf( "reserve=%d ",bmac_tx_reserve_get() );
// Task gets control again after TX complete
nrk_led_clr (BLUE_LED);
}
}
void gateway_task ()
{
uint8_t i, len;
int8_t rssi, val;
uint8_t *local_rx_tx_buf;
uint16_t batt;
nrk_time_t check_period, wait_time;
uint16_t buf;
int8_t fd;
uint8_t j, cnt, level;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t next_transmit_time;
nrk_time_t current_time;
nrk_time_t prev_time;
char tmp[4];
printf ("gateway_task PID=%d\r\n", nrk_get_pid ());
next_transmit_time.secs = 0;
next_transmit_time.nano_secs = 0;
// init bmac on channel 25
bmac_init (26);
// By default the RX check rate is 100ms
// below shows how to change that
check_period.secs=0;
check_period.nano_secs=100*NANOS_PER_MS;
val=bmac_set_rx_check_rate(check_period);
// The default Clear Channel Assement RSSI threshold is -32
// Setting this value higher means that you will only trigger
// receive with a very strong signal. Setting this lower means
// bmac will try to receive fainter packets. If the value is set
// too high or too low performance will suffer greatly.
// bmac_set_cca_thresh(-36);
if(val==NRK_ERROR) nrk_kprintf( PSTR("ERROR setting bmac rate\r\n" ));
// This sets the next RX buffer.
// This can be called at anytime before releaseing the packet
// if you wish to do a zero-copy buffer switch
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
nrk_time_set(0, 0);
cnt = 0;
// Initially clear all the data buffers
for(i=0; i<(MAX_NODES);i++)
{
for(j=0; j<(WORDS_PER_NODE); j++)
{
data_pkt.node_specific_data[i][j] = 0;
}
}
while (1)
{
nrk_time_get(¤t_time);
// If it is time to flood the network, send the control packets
if(current_time.secs%FLOOD_RATE == 0 && prev_time.secs != current_time.secs || cnt == 0)
{
prev_time = current_time;
cnt ++;
SET_PACKET_COUNT(pkt_buf.pkt_type_cnt, cnt);
#if MODE==DATA_MODE
SET_PACKET_TYPE(pkt_buf.pkt_type_cnt, PKT_TYPE_CONTROL);
#else
SET_PACKET_TYPE(pkt_buf.pkt_type_cnt, PKT_TYPE_DIAG_CONTROL);
#endif
pkt_buf.hop_number = 0;
pkt_buf.time_to_flood = TIME_TO_FLOOD_IN_SECS;
pkt_buf.bmac_check_rate = BMAC_CHECK_RATE_IN_MS;
pkt_buf.maximum_depth = MAXIMUM_DEPTH;
pkt_buf.delay_at_each_level = DELAY_AT_EACH_LEVEL_IN_SECS;
pkt_buf.next_control_time = NEXT_CONTROL_TIME;
pkt_buf.data_push_rate = 0;
for(i=0; i<(MAX_NODES);i++)
{
for(j=0; j<(WORDS_PER_NODE); j++)
{
#if MODE==DATA_MODE
pkt_buf.node_specific_data[i][j] = SENSOR;
#else
pkt_buf.node_specific_data[i][j] = 0;
#endif
}
}
memcpy(tx_buf, &pkt_buf, sizeof(pkt_buf));
// Non-blocking send
nrk_led_set (BLUE_LED);
val = bmac_tx_pkt_nonblocking (tx_buf, sizeof(struct message_packet));
nrk_kprintf (PSTR ("Tx packet enqueued\r\n"));
ret = nrk_event_wait (SIG(tx_done_signal));
if(ret & SIG(tx_done_signal) == 0 )
nrk_kprintf (PSTR ("TX done signal error\r\n"));
nrk_led_clr (BLUE_LED);
}
// If a new packet has been received, then update the information
if(bmac_rx_pkt_ready())
{
// Wait until an RX packet is received
nrk_led_set (ORANGE_LED);
// Get the RX packet
local_rx_tx_buf = bmac_rx_pkt_get (&len, &rssi);
for (i = 0; i < len; i++)
printf ("%d", rx_buf[i]);
printf ("\r\n");
memcpy(&pkt_buf, rx_buf, sizeof(pkt_buf));
nrk_led_clr (ORANGE_LED);
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// If the received packet is a data packet then update the information, gateway just ignores the control packets
if(GET_PACKET_TYPE(pkt_buf.pkt_type_cnt) == PKT_TYPE_DIAG_DATA || GET_PACKET_TYPE(pkt_buf.pkt_type_cnt) == PKT_TYPE_DATA)
{
printf("Type = %d\n\r", GET_PACKET_TYPE(pkt_buf.pkt_type_cnt));
printf("Count = %d\n\r", GET_PACKET_COUNT(pkt_buf.pkt_type_cnt));
printf("Hop # = %d\n\r", pkt_buf.hop_number);
printf("TTF = %d\n\r", pkt_buf.time_to_flood);
printf("BCR = %d\n\r", pkt_buf.bmac_check_rate);
printf("Nmax = %d\n\r", pkt_buf.maximum_depth);
printf("Dlev = %d\n\r", pkt_buf.delay_at_each_level);
printf("Nxt = %d\n\r", pkt_buf.next_control_time);
printf("Prate = %d\n\r", pkt_buf.data_push_rate);
for(i=0; i<(MAX_NODES);i++)
{
for(j=0; j<(WORDS_PER_NODE); j++)
{
if(pkt_buf.node_specific_data[i][j] != 0)
data_pkt.node_specific_data[i][j] = pkt_buf.node_specific_data[i][j];
}
}
for(i=0; i<(MAX_NODES);i++)
{
printf("Value @ Node %d is %d (cnt is %d)", i, ((int16_t)data_pkt.node_specific_data[i][1]<<4), (data_pkt.node_specific_data[i][0]&0x3F));
printf("\n\r");
}
}
}
}
}
void tx_task ()
{
uint8_t j, i, error,unique;
uint8_t samples;
int8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_sig_mask_t ret;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val=bmac_addr_decode_set_my_mac(((uint16_t)MY_SUBNET_MAC_0<<8)|MY_MAC);
val=bmac_addr_decode_dest_mac(0xffff); // broadcast by default
bmac_addr_decode_enable();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
while (1) {
my_nlist_elements=0;
for(samples=0; samples<10; samples++ )
{
nrk_led_set (GREEN_LED);
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
build_ping_pkt( &p2p_pkt );
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet(&p2p_pkt);
// For blocking transmits, use the following function call.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
check_period.secs = 0;
check_period.nano_secs = p2p_pkt.check_rate * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("\r\nSent Request:\r\n"));
#endif
nrk_led_clr (GREEN_LED);
// Wait for packets or timeout
nrk_time_get (&start);
while (1) {
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Wait until an RX packet is received
//val = bmac_wait_until_rx_pkt ();
nrk_set_next_wakeup (timeout);
my_sigs = nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Set the buffer
p2p_pkt.buf=local_rx_buf;
p2p_pkt.buf_len=len;
p2p_pkt.rssi=rssi;
unpack_peer_2_peer_packet(&p2p_pkt);
#ifdef TXT_DEBUG
// Check if newly received packet is for this node
if (((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
&& p2p_pkt.pkt_type==PING_PKT) {
// Packet arrived and is good to go
printf( "src: %d ",p2p_pkt.src_mac);
printf( "rssi: %d ",p2p_pkt.rssi);
printf( "subnet: %d %d %d ",p2p_pkt.src_subnet_mac[0], p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2]);
printf( "type: %d ",p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
unique=1;
// Check if the MAC is unique
for(i=0; i<my_nlist_elements; i++ )
{
if(my_nlist[i*NLIST_SIZE]==p2p_pkt.src_subnet_mac[2] &&
my_nlist[i*NLIST_SIZE+1]==p2p_pkt.src_subnet_mac[1] &&
my_nlist[i*NLIST_SIZE+2]==p2p_pkt.src_subnet_mac[0] &&
my_nlist[i*NLIST_SIZE+3]==p2p_pkt.src_mac)
{
unique=0;
break;
}
}
// If MAC is unique, add it
if(unique)
{
my_nlist[my_nlist_elements*NLIST_SIZE]=p2p_pkt.src_subnet_mac[2];
my_nlist[my_nlist_elements*NLIST_SIZE+1]=p2p_pkt.src_subnet_mac[1];
my_nlist[my_nlist_elements*NLIST_SIZE+2]=p2p_pkt.src_subnet_mac[0];
my_nlist[my_nlist_elements*NLIST_SIZE+3]=p2p_pkt.src_mac;
my_nlist[my_nlist_elements*NLIST_SIZE+4]=p2p_pkt.rssi;
my_nlist_elements++;
}
}
#endif
}
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
}
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break;
}
cnt++;
}
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
nrk_kprintf (PSTR ("\r\n\r\nSurvey Says:\r\n"));
nrk_kprintf( PSTR("LOC_DESC: \"location name\"\r\n" ));
for(i=0; i<my_nlist_elements; i++ )
{
nrk_kprintf( PSTR( "MAC: " ));
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE] );
else printf( "%x", my_nlist[i*NLIST_SIZE] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+1] );
else printf( "%x", my_nlist[i*NLIST_SIZE+1] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+2] );
else printf( "%x", my_nlist[i*NLIST_SIZE+2] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+3] );
else printf( "%x", my_nlist[i*NLIST_SIZE+3] );
printf( " RSSI: %d\r\n", (int8_t)my_nlist[i*NLIST_SIZE+4] );
}
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
// Get the signal for UART RX
//uart_rx_signal=nrk_uart_rx_signal_get();
// Register your task to wakeup on RX Data
//if(uart_rx_signal==NRK_ERROR) nrk_kprintf( PSTR("Get Signal ERROR!\r\n") );
//nrk_signal_register(uart_rx_signal);
//printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_encryption_set_key(aes_key,16);
bmac_encryption_enable();
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
//nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
while (1)
{
nrk_kprintf(PSTR("\r\n*************************************************************\r\n"));
nrk_kprintf(PSTR(" PHOENIX WIRELESS UPDATE SYSTEM \r\n"));
nrk_kprintf(PSTR("*************************************************************\r\n"));
nrk_kprintf(PSTR("Press 'p' : To PING Nodes in Vicinity \r\n"));
nrk_kprintf(PSTR("Press 'u' : To Begin Node Update \r\n"));
nrk_kprintf(PSTR(" \r\n"));
nrk_kprintf(PSTR("*************************************************************\r\n"));
printf("Enter Choice: ");
//sm=nrk_event_wait(SIG(uart_rx_signal));
//if(sm != SIG(uart_rx_signal))
//{
// nrk_kprintf( PSTR("UART signal error\r\n") );
// while(1);
//}
// Wait for UART signal
while(1)
{
if(nrk_uart_data_ready(NRK_DEFAULT_UART)!=0)
{
// Read Character
c=getchar();
printf( "%c\r\n",c);
break;
}
timeout.secs = 0;
timeout.nano_secs = 20 * NANOS_PER_MS;
nrk_wait(timeout);
}
// Choose mode
switch(c){
case 'p':
programState = PING;
break;
case 'u':
getDestMac();
phoenix_init();
programState = UPDATE;
break;
default:
programState = NONE;
nrk_kprintf(PSTR("Invalid Command! Please Try Again\r\n"));
}
// Reset c
c = 0;
nrk_wait_until_next_period();
// Execute protocol
switch(programState)
{
case PING:
pingMode();
break;
case UPDATE:
updateMode();
break;
case NONE:;// Do nothing
break;
default:
nrk_kprintf(PSTR("Invalid Program State\r\n"));
break;
}
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
uint8_t j, i, cnt, error;
int8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_sig_mask_t ret;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
// Configure address for other packet handlers (my not be needed)
my_mac= MY_MAC;
my_subnet_mac[0]= MY_SUBNET_MAC_0;
my_subnet_mac[1]= MY_SUBNET_MAC_1;
my_subnet_mac[2]= MY_SUBNET_MAC_2;
mac_address= (uint8_t)MY_SUBNET_MAC_2 << 24 | (uint8_t)MY_SUBNET_MAC_1 <<16 | (uint8_t)MY_SUBNET_MAC_0 << 8 | (uint8_t)MY_MAC;
while (!bmac_started ())
nrk_wait_until_next_period ();
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val =
bmac_addr_decode_set_my_mac (((uint16_t) MY_SUBNET_MAC_0 << 8) | MY_MAC);
val = bmac_addr_decode_dest_mac (0xffff); // broadcast by default
bmac_addr_decode_enable ();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
while (1) {
// Build a TX packet by hand...
p2p_pkt.pkt_type = DATA_STORAGE_PKT;
p2p_pkt.ctrl_flags = LINK_ACK | MOBILE_MASK; // | DEBUG_FLAG ;
p2p_pkt.ack_retry = 0x0f;
p2p_pkt.ttl = 1;
p2p_pkt.src_subnet_mac[0] = MY_SUBNET_MAC_0;
p2p_pkt.src_subnet_mac[1] = MY_SUBNET_MAC_1;
p2p_pkt.src_subnet_mac[2] = MY_SUBNET_MAC_2;
p2p_pkt.src_mac = MY_MAC;
p2p_pkt.last_hop_mac = MY_MAC;
// p2p_pkt.dst_subnet_mac[0] = BROADCAST;
// p2p_pkt.dst_subnet_mac[1] = BROADCAST;
// p2p_pkt.dst_subnet_mac[2] = BROADCAST;
// p2p_pkt.dst_mac = BROADCAST;
p2p_pkt.dst_subnet_mac[0] = BROADCAST;
p2p_pkt.dst_subnet_mac[1] = BROADCAST;
p2p_pkt.dst_subnet_mac[2] = BROADCAST;
p2p_pkt.dst_mac = 0x1;
p2p_pkt.buf = tx_buf;
p2p_pkt.buf_len = P2P_PAYLOAD_START;
p2p_pkt.seq_num = cnt;
p2p_pkt.priority = 0;
p2p_pkt.check_rate = 100;
p2p_pkt.payload = &(tx_buf[P2P_PAYLOAD_START]);
cnt++;
#ifdef TEST_WRITE
data_pkt.mode=EE_WRITE;
data_pkt.addr=0x110; // Must be greater than 0x100
data_pkt.data_len=0x10;
// point the eeprom data structure to our local data buffer
data_pkt.eeprom_payload=eeprom_data;
// copy over some data
for(i=0; i<data_pkt.data_len; i++ )
data_pkt.eeprom_payload[i]=i;
#endif
#ifdef TEST_READ
data_pkt.mode=EE_READ;
data_pkt.addr=0x200; // Must be greater than 0x100
data_pkt.data_len=0x3d;
#endif
// add the eeprom pkt to the p2p pkt
p2p_pkt.payload_len= eeprom_storage_pkt_pack(&data_pkt, p2p_pkt.payload);
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet (&p2p_pkt);
nrk_led_set (BLUE_LED);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf( PSTR("sending: " ));
for(i=0; i<p2p_pkt.buf_len; i++ )
printf( "%u ",p2p_pkt.buf[i] );
printf( "\r\n" );
// For blocking transmits, use the following function call.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
check_period.secs = 0;
check_period.nano_secs = FAST_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("\r\nSent Request:\r\n"));
#endif
nrk_led_clr (BLUE_LED);
nrk_led_clr (GREEN_LED);
// Wait for packets or timeout
nrk_time_get (&start);
while (1) {
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Wait until an RX packet is received
//val = bmac_wait_until_rx_pkt ();
if(bmac_rx_pkt_ready()==0)
{
nrk_set_next_wakeup (timeout);
my_sigs = nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
}
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Set the buffer
p2p_pkt.buf = local_rx_buf;
p2p_pkt.buf_len = len;
p2p_pkt.rssi = rssi;
unpack_peer_2_peer_packet (&p2p_pkt);
#ifdef TXT_DEBUG
if ((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
{
nrk_led_set (GREEN_LED);
// Packet arrived and is good to go
printf ("full mac: %d %d %d %d ", p2p_pkt.src_subnet_mac[0],
p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2],
p2p_pkt.src_mac);
printf ("rssi: %d ", p2p_pkt.rssi);
printf ("type: %d ", p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
if(p2p_pkt.pkt_type== DATA_STORAGE_PKT )
{
eeprom_storage_pkt_unpack(&data_pkt, p2p_pkt.payload );
nrk_kprintf( PSTR("\r\n Storage Packet " ));
nrk_kprintf( PSTR("\r\n Mode: " ));
switch(data_pkt.mode)
{
case EE_REPLY: nrk_kprintf( PSTR( "Reply")); break;
case EE_ERROR: nrk_kprintf( PSTR( "Error" )); break;
case EE_READ: nrk_kprintf( PSTR( "Read" )); break;
case EE_WRITE: nrk_kprintf( PSTR( "Write" )); break;
default: nrk_kprintf( PSTR( "unknown" ));
}
nrk_kprintf( PSTR("\r\n From: " ));
printf( "%u",data_pkt.mac );
nrk_kprintf( PSTR("\r\n Addr: " ));
printf( "%u",data_pkt.addr);
nrk_kprintf( PSTR("\r\n Len: " ));
printf( "%u",data_pkt.data_len);
nrk_kprintf( PSTR("\r\n Data: " ));
for(i=0; i<data_pkt.data_len; i++ ) printf( "%u ",data_pkt.eeprom_payload[i]);
nrk_kprintf( PSTR("\r\n" ));
}
}
#endif
}
}
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break;
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
}
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
uint8_t j, i, val, len, cnt;
int8_t v;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
// printf("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
while (!bmac_started ())
nrk_wait_until_next_period ();
// Sample of using Reservations on TX packets
// This example allows 2 packets to be sent every 5 seconds
// r_period.secs=5;
// r_period.nano_secs=0;
// v=bmac_tx_reserve_set( &r_period, 2 );
// if(v==NRK_ERROR) nrk_kprintf( PSTR("Error setting b-mac tx reservation (is NRK_MAX_RESERVES defined?)\r\n" ));
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
ctr_cnt[0]=0; ctr_cnt[1]=0; ctr_cnt[2]=0; ctr_cnt[3]=0;
cnt = 0;
while (1) {
// Build a TX packet
sprintf (tx_buf, "This is a test %d", cnt);
nrk_led_set (BLUE_LED);
// Auto ACK is an energy efficient link layer ACK on packets
// If Auto ACK is enabled, then bmac_tx_pkt() will return failure
// if no ACK was received. In a broadcast domain, the ACK's will
// typically collide. To avoid this, one can use address decoding.
// The functions are as follows:
// bmac_auto_ack_enable();
bmac_auto_ack_disable();
// Address decoding is a way of preventing the radio from receiving
// packets that are not address to a particular node. This will
// supress ACK packets from nodes that should not automatically ACK.
// The functions are as follows:
// bmac_addr_decode_set_my_mac(uint16_t MAC_ADDR);
// bmac_addr_decode_dest_mac(uint16_t DST_ADDR); // 0xFFFF is broadcast
// bmac_addr_decode_enable();
// bmac_addr_decode_disable();
/*
ctr_cnt[0]=cnt;
if(ctr_cnt[0]==255) ctr_cnt[1]++;
if(ctr_cnt[1]==255) ctr_cnt[2]++;
if(ctr_cnt[2]==255) ctr_cnt[3]++;
// You need to increase the ctr on each packet to make the
// stream cipher not repeat.
bmac_encryption_set_ctr_counter(&ctr_cnt,4);
*/ // For blocking transmits, use the following function call.
// For this there is no need to register
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
if(val==NRK_OK) cnt++;
else printf("NO ack or Reserve Violated! \r\n");
// This function shows how to transmit packets in a
// non-blocking manner
// val = bmac_tx_pkt_nonblocking(tx_buf, strlen (tx_buf));
// printf ("Tx packet enqueued\r\n");
// This functions waits on the tx_done_signal
//ret = nrk_event_wait (SIG(tx_done_signal));
// Just check to be sure signal is okay
//if(ret & SIG(tx_done_signal) == 0 )
//printf ("TX done signal error\r\n");
// If you want to see your remaining reservation
// printf( "reserve=%d ",bmac_tx_reserve_get() );
// Task gets control again after TX complete
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
nrk_wait_until_next_period ();
}
}
/*
void inter_tx_task ()
{
uint8_t j, i, val, len, cnt;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
cnt = 0;
while (1) {
if(inter_flag==1){
printf("Hi..\n");
bmac_addr_decode_disable();
bmac_addr_decode_set_my_mac(MY_MAC_ADDR);
sprintf(&tx_buf[0],"%d",MY_MAC_ADDR);
for(i=0;i<strlen(inter_tx_buf);i++){
tx_buf[i+1]=inter_tx_buf[i];
}
nrk_led_set (BLUE_LED);
bmac_auto_ack_disable();
bmac_addr_decode_dest_mac(dst_addr); // 0xFFFF is broadcast
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
inter_flag=0;
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
}
nrk_wait_until_next_period ();
}
}
*/
void tx_task ()
{
uint8_t j, i, val, len, cnt,turn=0;
nrk_sig_t tx_done_signal;
nrk_sig_mask_t ret;
nrk_time_t r_period;
while (!bmac_started ())
nrk_wait_until_next_period ();
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
cnt = 0;
while (1) {
if(inter_flag==0 ){
printf("Hi..\n");
bmac_addr_decode_disable();
bmac_addr_decode_set_my_mac(MY_MAC_ADDR);
sprintf(tx_buf,"node_id:%d count:%d",MY_MAC_ADDR,cnt);
nrk_led_set (BLUE_LED);
bmac_auto_ack_disable();
bmac_addr_decode_dest_mac(dst_addr); // 0xFFFF is broadcast
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
}
if(inter_flag==1){
if(turn==0){
printf("Hi..\n");
bmac_addr_decode_disable();
bmac_addr_decode_set_my_mac(MY_MAC_ADDR);
sprintf(tx_buf,"Path: %d-1 node_id:%d count:%d",MY_MAC_ADDR,MY_MAC_ADDR,cnt);
nrk_led_set (BLUE_LED);
bmac_auto_ack_disable();
bmac_addr_decode_dest_mac(dst_addr); // 0xFFFF is broadcast
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
turn=1;
}
else{
bmac_addr_decode_disable();
bmac_addr_decode_set_my_mac(MY_MAC_ADDR);
sprintf(&tx_buf[0],"%d",MY_MAC_ADDR);
for(i=0;i<strlen(inter_tx_buf);i++){
tx_buf[i+1]=inter_tx_buf[i];
}
nrk_led_set (BLUE_LED);
bmac_auto_ack_disable();
bmac_addr_decode_dest_mac(dst_addr); // 0xFFFF is broadcast
val=bmac_tx_pkt(tx_buf, strlen(tx_buf));
printf("Tx task sent data!\r\n");
nrk_led_clr (BLUE_LED);
printf("tx_task PID=%d\r\n", nrk_get_pid ());
turn=0;
}
}
cnt++;
nrk_wait_until_next_period ();
}
}
void nl_tx_task()
{
TransmitBuffer *ptr = NULL; // pointer to the buffer to be transmitted
nrk_sig_t tx_done_signal; // to hold the tx_done signal from the link layer
int8_t ret; // to hold the return value of various functions
int8_t port_index; // to store the index of the corresponding port element
int8_t sent; // to count the number of times the HELLO msg was sent
int8_t isApplication; // flag to indicate whether the packet in the transmit
// buffer is an APPLICATION / NW_CONTROL packet
nrk_time_t timeout;
nrk_time_t start; // used for sending network control messages
nrk_time_t end;
nrk_time_t elapsed;
// wait for the nl_rx_task to start bmac
while(!bmac_started()) nrk_wait_until_next_period();
// retrieve and register for the 'transmit done' signal from bmac
tx_done_signal = bmac_get_tx_done_signal();
if( nrk_signal_register(tx_done_signal) == NRK_ERROR )
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: Error while registering for the bmax_tx_done_signal\r\n"));
}
// initialise the timer
nrk_time_get(&start);
end.secs = start.secs;
end.nano_secs = start.nano_secs;
sent = 0;
// set the radio power
if( bmac_set_rf_power(10) == NRK_ERROR)
{
nrk_led_set(RED_LED);
nrk_int_disable();
while(1)
nrk_kprintf(PSTR("Error setting the transmit power\r\n"));
}
while(1)
{
isApplication = FALSE; // assume at the beginning that a nw_ctrl pkt will be transmitted
ret = nrk_time_sub(&elapsed, end, start);
if(ret == 0)
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: Error returned by nrk_time_sub\r\n"));
}
nrk_time_compact_nanos(&elapsed);
if(elapsed.secs >= HELLO_PERIOD)
{
sent++;
build_Msg_Hello(&mhe); // build the 'HELLO' message
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("After building Msg_Hello, packet = "));
print_pkt(&pkt_tx);
}
enter_cr(bm_sem, 34);
ret = insert_tx_aq(&pkt_tx); // insert it into the transmit queue
leave_cr(bm_sem, 34);
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("build_Msg_Hello() inserted packet."));
print_tx_buffer();
//print_pkt_header(&pkt_tx);
}
if(ret == NRK_ERROR && DEBUG_NL == 2)
{
nrk_kprintf(PSTR("HELLO msg was not inserted into the transmit queue\r\n"));
}
start.secs = end.secs;
start.nano_secs = end.nano_secs; // reinitialise the timer
}
if(sent >= 3) //NGB_LIST_PERIOD / HELLO_PERIOD) // NGB_LIST period is always a multiple of HELLO_PERIOD
{
build_Msg_NgbList(&mn); // build the 'NGB_LIST' message
enter_cr(bm_sem, 34);
ret = insert_tx_aq(&pkt_tx); // insert it into the transmit queue
leave_cr(bm_sem, 34);
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("build_Msg_NgbList() inserted packet."));
print_tx_buffer();
//print_pkt_header(&pkt_tx);
}
if(ret == NRK_ERROR && DEBUG_NL == 2)
{
nrk_kprintf(PSTR("NGB_LIST msg was not inserted into the transmit queue\r\n"));
}
sent = 0; // reset the value of 'sent'
}
if(rand() % 2 == 0) // random number generator
collect_queue_statistics();
enter_cr(bm_sem, 34);
ptr = remove_tx_aq();
leave_cr(bm_sem, 34);
if(ptr == NULL) // transmit queue is empty
{
if(DEBUG_NL == 2)
nrk_kprintf(PSTR("NL:Transmit queue is empty\r\n"));
// update the end time
nrk_time_get(&end);
nrk_wait_until_next_period(); // FIX ME
continue;
}
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("NL: nl_tx_task(): Packet removed. Packet = "));
//print_pkt_header( &(ptr -> pkt) );
print_pkt( &(ptr -> pkt) );
//print_tx_buffer();
}
// check to see the type of packet. It should be of type APPLICATION and be sent by this
// node
if( (pkt_type(&(ptr -> pkt)) == APPLICATION) && ((ptr -> pkt).src == NODE_ADDR) )
{
// remove the encapsulated TL segment from the packet
unpack_TL_UDP_header(&seg, (ptr -> pkt).data);
memcpy(seg.data, (ptr -> pkt).data + SIZE_TRANSPORT_UDP_HEADER, MAX_APP_PAYLOAD);
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("NL: nl_tx_task(): Segment Removed = "));
print_seg(&seg);
}
isApplication = TRUE;
}
// pack the network packet header into the transmit buffer
pack_NW_Packet_header(tx_buf, &(ptr -> pkt));
// append the network payload into the transmit buffer
memcpy(tx_buf + SIZE_NW_PACKET_HEADER, (ptr -> pkt).data, MAX_NETWORK_PAYLOAD);
enter_cr(bm_sem, 34);
insert_tx_fq(ptr); // release the transmit buffer into the free queue
leave_cr(bm_sem, 34);
if(DEBUG_NL == 2)
{
nrk_kprintf(PSTR("NL: nl_tx_task(): Released transmit buffer back into queue\n"));
print_tx_buffer();
}
do
{
ret = bmac_tx_pkt_nonblocking(tx_buf, SIZE_NW_PACKET); // try to queue the buffer in link layer
if(ret == NRK_ERROR)
if(nrk_event_wait(SIG(tx_done_signal)) == 0)
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: Error returned by nrk_event_wait(tx_done_signal)\r\n"));
}
}while(ret == NRK_ERROR);
// packet is queued at link layer
timeout.secs = 10; // set a wait period of maximum 10 seconds
timeout.nano_secs = 0;
if( nrk_signal_register(nrk_wakeup_signal) == NRK_ERROR )
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL:nl_tx(): Error registering for nrk_wakeup_signal\r\n"));
}
if( nrk_set_next_wakeup(timeout) == NRK_ERROR)
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: nl_tx(): Error returned by nrk_set_next_wakeup()\r\n"));
}
nrk_led_set(BLUE_LED);
ret = nrk_event_wait (SIG(tx_done_signal) | SIG(nrk_wakeup_signal)); // wait for its transmission
if(ret == 0)
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: Error returned by nrk_event_wait(tx_done_signal)\r\n"));
}
if(ret & SIG(tx_done_signal)) // bmac has successfully sent the packet over the radio
{
if(isApplication == TRUE) // it was an application layer packet
{
enter_cr(tl_sem, 34);
port_index = port_to_port_index(seg.srcPort);
if(port_index == NRK_ERROR) // sanity check
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: nl_tx_task: Bug detected in implementation of port element array\r\n"));
}
// signal 'send done' signal
if(nrk_event_signal(ports[port_index].send_done_signal) == NRK_ERROR)
{
if(nrk_errno_get() == 1) // sanity check. This means signal was not created
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: nl_tx_task: Bug detected in creating signals in port element array\r\n"));
}
}
leave_cr(tl_sem, 34);
}// end if(isApplication == TRUE)
else // a network control message was transmitted. Nothing to signal
; // do nothing
} // end if(signal received = tx_done_signal)
else if(ret & SIG(nrk_wakeup_signal))
{
//nrk_led_set(RED_LED);
//nrk_int_disable();
//while(1)
//{
nrk_kprintf(PSTR("BMAC did not transmit the packet within specified time\r\n"));
//}
}
else // unknown signal caught
{
nrk_int_disable();
nrk_led_set(RED_LED);
while(1)
nrk_kprintf(PSTR("NL: nl_tx_task(): Unknown signal caught\r\n"));
}
nrk_led_clr(BLUE_LED);
// update the end time
nrk_time_get(&end);
} // end while(1)
return;
}
void tx_task ()
{
uint8_t i, unique;
uint8_t samples ;
uint8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val =
bmac_addr_decode_set_my_mac (((uint16_t) MY_SUBNET_MAC_0 << 8) | MY_MAC );
val = bmac_addr_decode_dest_mac (0xffff); // broadcast by default
bmac_addr_decode_enable ();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Main loop that does:
// 1) Sends out ping message
// 2) Collects replies, build neighbor list and then times out
// 3) Repeat 1 and 2 for 3 times
// 4) Build Extended Neighborlist packet
// 5) Send Neighbor list packet
// 6) Wait until next period and repeat 1-6
while (1) {
nrk_led_clr (ORANGE_LED);
// Set our local neighbor list to be empty
my_nlist_elements = 0;
for (samples = 0; samples < 3; samples++) {
nrk_led_set (GREEN_LED);
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Construct a ping packet to send (this is being built into tx_buf)
build_ping_pkt (&p2p_pkt);
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet (&p2p_pkt);
// Send the Ping packet
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
// Set update rate based on p2p reply rate.
// This is usually faster to limit congestion
check_period.secs = 0;
check_period.nano_secs = p2p_pkt.check_rate * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("Pinging...\r\n"));
#endif
nrk_led_clr (GREEN_LED);
// Grab start time for timeout
nrk_time_get (&start);
while (1) {
// Set the amount of time to wait for timeout
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Check if packet is already ready, or wait until one arrives
// Also set timeout to break from function if no packets come
my_sigs=0;
if (bmac_rx_pkt_ready () == 0) {
nrk_set_next_wakeup (timeout);
my_sigs =
nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
}
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Setup a p2p packet data structure with the newly received buffer
p2p_pkt.buf = local_rx_buf;
p2p_pkt.buf_len = len;
p2p_pkt.rssi = rssi;
// Unpack the data from the array into the p2p_pkt data struct
unpack_peer_2_peer_packet (&p2p_pkt);
// Check if newly received packet is for this node
if (((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
&& (p2p_pkt.pkt_type == PING_PKT)) {
// Packet arrived and is ping pkt!
// Lets print some values out on the terminal
printf ("full mac: %d %d %d %d ", p2p_pkt.src_subnet_mac[0],
p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2],
p2p_pkt.src_mac);
printf ("rssi: %d ", p2p_pkt.rssi);
printf ("type: %d ", p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
unique = 1;
// Check if the MAC of this ping is unique or if it already
// exists in our neighbor list
for (i = 0; i < my_nlist_elements; i++) {
if (my_nlist[i * NLIST_SIZE] == p2p_pkt.src_subnet_mac[2] &&
my_nlist[i * NLIST_SIZE + 1] == p2p_pkt.src_subnet_mac[1] &&
my_nlist[i * NLIST_SIZE + 2] == p2p_pkt.src_subnet_mac[0] &&
my_nlist[i * NLIST_SIZE + 3] == p2p_pkt.src_mac) {
unique = 0;
break;
}
}
// If MAC is unique, add it to our neighbor list
if (unique) {
my_nlist[my_nlist_elements * NLIST_SIZE] =
p2p_pkt.src_subnet_mac[2];
my_nlist[my_nlist_elements * NLIST_SIZE + 1] =
p2p_pkt.src_subnet_mac[1];
my_nlist[my_nlist_elements * NLIST_SIZE + 2] =
p2p_pkt.src_subnet_mac[0];
my_nlist[my_nlist_elements * NLIST_SIZE + 3] =
p2p_pkt.src_mac;
my_nlist[my_nlist_elements * NLIST_SIZE + 4] = p2p_pkt.rssi;
my_nlist_elements++;
}
}
}
}
// Check if we are done waiting for pings
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break; // exit loops waiting for pings
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// Go back to top loop to wait for more pings
}
cnt++;
// Repeat ping 3 times
}
// Now we are ready to build extended neighborlist packet and send it to gateway
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
// If we have any neighbors, build the list
if (my_nlist_elements > 0) {
// Look in this function for format of extended neighborlist packet
// This function also configures the parameters and destination address
// of the p2p packet. The values are probably okay as defaults.
build_extended_neighbor_list_pkt (&p2p_pkt, my_nlist,
my_nlist_elements);
// This function takes at p2p struct and packs it into an array for sending
pack_peer_2_peer_packet (&p2p_pkt);
nrk_led_set (BLUE_LED);
// Send the list to the gateway.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
printf ("size of pkt: %d\r\n", p2p_pkt.buf_len);
nrk_kprintf (PSTR ("sent neighbor list packet\r\n"));
nrk_led_clr (BLUE_LED);
}
else {
nrk_led_set (RED_LED);
nrk_spin_wait_us (1000);
nrk_led_clr (RED_LED);
}
// Wait a long time until we send out the pings again
// This is in a loop so that period can be small for
// other uses.
for (i = 0; i < 10; i++)
nrk_wait_until_next_period ();
// Might as well release packets that arrived during long
// break since they are not replies to your ping.
bmac_rx_pkt_release ();
}
}